Oneshot - What if Umbridge's ascension to the post of High Inquisitor attracts the attention of a very different kind of Inquisition than she was expecting…..

It is the 45th Millennium and the galaxy is dying. On the verge of victory over the Imperium, the Chaos forces have proven unable to stem the tide against the Great Devourer and its trillions of Tyranids. Only one option: cross the dimensions, find a hero able to triumph where billions have utterly failed and change the course of the past...

Scion's threat to all the Earth's has consequences that few foresaw. From the grim darkness of an endangered alternate universe, a girl called Taylor Hebert receives a care package of sorts. Three species' worth of super-tech has to be better for her than "bugs"... right?

The sci-fi fantasy crossover to end all sci-fi fantasy crossovers. Star Wars? Got it! Warhammer? Yes we do! Halo? You bet! Dungeons and Dragons? Also on my list! Oh look, there’s also stuff from Mechwarrior, Transformers, Marvel Comics, Avatar, RWBY, and lots more! Time to combine all those universes into one!

Salem is banished from her planet by the Twins. Stranded on the broken world of Terra. The despair shall fall on her.

Tragedy hits Issei and is transported to a mysterious world. Without his boosted gear, he must face himself and the horror of this new world. Though he is not alone as Issei shall meet the Emperor's great creations, his daughters. Suited with a power to rival creations itself. Issei hero of the Imperium and the broken. LONG LIVE ISSEI HERO OF MANKIND. Scp-themes

The Emperor wasn't sure how he ended up in a different universe, or what the parasite leeching off Humanity was. But he was the guardian of Mankind, and there was at least one person on this world worthy of taking up his mantle.

The Flesh is weak. I have always known that. Logic metal and steel are strength. They are right in how you must embrace the strength and certainty of steel. I need that more than ever. Because I'm now in a world that is out of my league. I have new enemies that hate me and who I am. But I am stuck here. In a place that isn't hope like I wanted. Forever now till whatever end. Big AU

After a vision of a great calamity by the High Rune Priest of the chapter, the Knights of the Wolf chapter of the Adeptus Astartes lay a trap for one of the most hated foes. Yet this trap would result in one of the bloodiest conflicts in the history of the Chapter and Segmentum.

In another universe Alaya would have awakened the moment humanity branched off from it's closest cousins. The galactic War in Heaven's effects thanks to the Old Ones and their creation or the Star Gods and Necrons changed this. When Alaya awakened it was the dawn of the 42nd Millennia. How will the Milky Way Galaxy respond when Alaya with Counter Force?

Taylor Hebert had a great destiny, upon which much rested. She was also a latent psyker, too weak to ever awaken her potential. In the most critical moment of her life, these two things, combined with a plea for help made with dying faith, drew unsavory attention. A gift was given, a gift that was also a curse.

The Lichemaster mysteriously dies in a very inconvenient set of circumstances. To salvage the Barrow Legion, one of his acolytes summons a replacement. Fortunately, she succeeded in this endeavor. Unfortunately, he is not exactly what she was expecting, especially considering he was from another world.

Is it too much to ask for a millennia or two of sleep? For one twice dead child of the Dominus Nox, rest won't be coming easily any time soon... (rated M for gore)

This is a "What If" story that features the primarchs of 'Warhammer 40k' being reborn as girls with quirks in the world of 'Boku no Hero Academia'. Yes, really. Cross-posted at AO3.

Stuck in a more peaceful galaxy, the Tau of the Farsight Enclave must still prepare themselves for war against the forces that conspire to destroy it. But as they fight for their existence, elements from their old home come to strengthen their power in said old home.

Two friends once cast adrift in a universe not their own find themselves in another. With their goals unknown, purpose not directed or forced, are they finally free to choose their own way?

Following the conclusion of the War of the Thorns Azeroth is thrown into war while mysterious portals on mount Hyjal and in the Scarlet Monastery have allowed both the Horde and Alliance to make contact with another world. As the two warring sides increasingly involve this other world in their war the question looms if they are not poisoning their future for the sake of victory

In an unexpected and highly unlikely turn of events, a catastrophic warp breach from a crippled ship manages to fling a Rogue Trader - or rather, the youngest son of a Rogue Trader - through time and space to a universe quite unlike what anyone on-board in used to. They make the best of the situation.

Tanya in 30k as a Primark, (we're just having a good time here, having fun with the concept don't think too hard about it)

Cause and Effect. In Saving his brothers world. Naruto now must contend with the burning of his own. Will the people of Elementia survive the onslaught of blood and fire? Meanwhile, others have taken interest in the young primarch and his legion. As he struggles to find his way back home so too others struggle. The heresy burns brightly, as chaos laughs at the struggles of mankind

after successfully defeating Salem, Summer Rose vanished from the face of remnant. 12 years later, she returns with a fighting force that none, not even atlas, have seen before. The death Korps of Krieg. this is the story of how the 863rd Death Korps waged war on the grimm and the white Fang extremists.

(Spoilers for the end of Betrayer) Dying at the hand of the one he used to call his mentor, Argel Tal of the Word Bearers and his inner daemon Raum find themselves hurtling through the void of death, the only thing keeping them together being their ravenous hatred for the one who betrayed them and somehow allowing them to be revived in a new, unknown world: Remnant.

Sometimes, small things can have unforeseen consequences. Like the butterfly causing an hurricane. Or the nail costing a war. Or the snotling messing around where he shouldn't causing the rise of a different kind of hero... "Awigt den, come have a go, ya gits! Waaaaagggghh!"

Commander Chloe Sheperd learns of a new group vying for power in the depths of Omega. But this is no ordinary gang, but far more powerful and horrific, brought forth from a place where there is only war. As she learns of its deeds and ambitions Shepherd must make a momentous descision, and hope she does not come to regret it.

War never changes be it in the 26th century or the 40th millennium